Supersymmetric cold dark matter with Yukawa unification

Gómez, M. E.; Lazarides, George; Pallis, C.

doi:10.1103/physrevd.61.123512

Cited by 198 publications

(175 citation statements)

References 44 publications

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“…Refs. [36,37]. Other refinements include, e.g., solving the density evolution equation numerically but still using an approximation to thermal effects in the cross section [31,32,33,34,35], or calculating the thermal average precisely but using an approximate solution to the density equation [38,39,40].…”

Section: Calculation Of Relic Densitymentioning

confidence: 99%

“…Later, coannihilations between the lightest neutralino and the lightest chargino were investigated in [29,30,11]. Several authors have also included coannihilations with sfermions [31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46]. In DarkSUSY we have implemented all coannihilations between the neutralinos, charginos and sfermions as calculated in [46].…”

Section: Calculation Of Relic Densitymentioning

confidence: 99%

See 1 more Smart Citation

DarkSUSY: computing supersymmetric dark matter properties numerically

Gondolo

Edsjö

Ullio

et al. 2004

J. Cosmol. Astropart. Phys.

910

1,059

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The question of the nature of the dark matter in the Universe remains one of the most outstanding unsolved problems in basic science. One of the best motivated particle physics candidates is the lightest supersymmetric particle, assumed to be the lightest neutralino -a linear combination of the supersymmetric partners of the photon, the Z boson and neutral scalar Higgs particles. Here we describe DarkSUSY, a publicly-available advanced numerical package for neutralino dark matter calculations. In DarkSUSY one can compute the neutralino density in the Universe today using precision methods which include resonances, pair production thresholds and coannihilations. Masses and mixings of supersymmetric particles can be computed within DarkSUSY or with the help of external programs such as FeynHiggs, ISASUGRA and SUSPECT. Accelerator bounds can be checked to identify viable dark matter candidates. DarkSUSY also computes a large variety of astrophysical signals from neutralino dark matter, such as direct detection in low-background counting experiments and indirect detection through antiprotons, antideuterons, gamma-rays and positrons from the Galactic halo or high-energy neutrinos from the center of the Earth or of the Sun. Here we describe the physics behind the package. A detailed manual will be provided with the computer package.

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Section: Calculation Of Relic Densitymentioning

confidence: 99%

Section: Calculation Of Relic Densitymentioning

confidence: 99%

DarkSUSY: computing supersymmetric dark matter properties numerically

Gondolo

Edsjö

Ullio

et al. 2004

J. Cosmol. Astropart. Phys.

910

1,059

View full text Add to dashboard Cite

show abstract

“…There has been a great deal of activity in computing the relic density for various regions of MSSM parameter space [415,416,417,418,419,414,413,420,421,422,423,424,425,426,106,427,428,429,430,431,432,433,434,435,436,437,438,439,440,441,442,443,444,445,446,447,448,449]. The state of the art numerical programs take into account nearly 8000 Feynman diagrams.…”

Section: Computing the Lsp Densitymentioning

confidence: 99%

The soft supersymmetry-breaking Lagrangian: theory and applications

Chung

Everett

Kane³

et al. 2005

Physics Reports

415

339

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After an introduction recalling the theoretical motivation for low energy (100 GeV to TeV scale) supersymmetry, this review describes the theory and experimental implications of the soft supersymmetry-breaking Lagrangian of the general minimal supersymmetric standard model (MSSM). Extensions to include neutrino masses and nonminimal theories are also discussed. Topics covered include models of supersymmetry breaking, phenomenological constraints from electroweak symmetry breaking, flavor/CP violation, collider searches, and cosmological constraints including dark matter and implications for baryogenesis and inflation.

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“…Alternatively, there might be one or more heavier supersymmetric particles that are nearly degenerate with the LSP, χ, and would have coannihilated with it in the early Universe [37]. There are several examples of possible coannihilating sparticles, including the lighter stau, or possibly some other slepton [38][39][40][41][42][43][44][45], the lighter stop squark [46][47][48][49][50][51][52][53][54][55][56], the lighter chargino [55,[57][58][59][60] and the gluino [56,[61][62][63][64][65][66][67][68][69][70][71][72].…”

Section: Introductionmentioning

confidence: 99%

Scenarios for gluino coannihilation

Ellis

Evans

Luo

et al. 2016

J. High Energ. Phys.

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We study supersymmetric scenarios in which the gluino is the next-to-lightest supersymmetric particle (NLSP), with a mass sufficiently close to that of the lightest supersymmetric particle (LSP) that gluino coannihilation becomes important. One of these scenarios is the MSSM with soft supersymmetry-breaking squark and slepton masses that are universal at an input GUT renormalization scale, but with non-universal gaugino masses. The other scenario is an extension of the MSSM to include vector-like supermultiplets. In both scenarios, we identify the regions of parameter space where gluino coannihilation is important, and discuss their relations to other regions of parameter space where other mechanisms bring the dark matter density into the range allowed by cosmology. In the case of the non-universal MSSM scenario, we find that the allowed range of parameter space is constrained by the requirement of electroweak symmetry breaking, the avoidance of a charged LSP and the measured mass of the Higgs boson, in particular, as well as the appearance of other dark matter (co)annihilation processes. Nevertheless, LSP masses m χ 8 TeV with the correct dark matter density are quite possible. In the case of pure gravity mediation with additional vector-like supermultiplets, changes to the anomalymediated gluino mass and the threshold effects associated with these states can make the gluino almost degenerate with the LSP, and we find a similar upper bound.

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Supersymmetric cold dark matter with Yukawa unification

Cited by 198 publications

References 44 publications

DarkSUSY: computing supersymmetric dark matter properties numerically

DarkSUSY: computing supersymmetric dark matter properties numerically

The soft supersymmetry-breaking Lagrangian: theory and applications

Scenarios for gluino coannihilation

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